Donald Cass

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An "artificial womb" has been developed that promises to dramatically improve the survival chances of extremely premature babies.<p>The device, which incorporates a plastic bag filled with artificial nutrient-rich amniotic fluid, has successfully been tested on foetal lambs equivalent in age to …

<b>(CNN) —</b> Pregnant women who have "lived in, traveled to, or had unprotected sex with someone who lived in or traveled to Miami-Dade County" since August 1 should be tested for the Zika virus, the Centers for Disease Control and Prevention said Wednesday.<p>"Our guidance today strengthens our travel …

They're incredibly tough, but incredibly effective<p>Think the burpee can’t get any worse?<p>Then wait until you see the 25 variations shown by <i>Men’s Health</i> Fitness Director B.J. Gaddour in the video above. With names like the punching burpee, the punisher burpee, and the dead-stop burpee, they’ll make …

It's simple, but effective—and will rev your metabolism for hours afterwards<p>A while back, I asked Alwyn Cosgrove, C.S.C.S.—one of the world’s top trainers—to create a cutting-edge fat loss program for <i>Men’s Health</i>. And, of course, he obliged.<p>But a curious thing: One of the workouts in the plan …

Follow these steps to correctly do this feat of upper body strength<p>We don’t do chinups at Gym Jones. We do pullups.<p>Most people say the difference between a pullup and a chinup is the direction that your hands face. (For chinups, your palms face in. For pullups, your palms face out.)<p>But we look at …

Send your calorie burn and heart rate through the roof—without moving your feet. And check back every day this week for a new heart-pumping workout<p>For Cardio Week 2015 at <i>Men’s Health</i>, we’ll feature a brand-new, equipment-free workout every day. These routines are fast, they’re hard, and they’re a …

Less is more when it comes to exercising for health<p>A brief workout can come with big rewards.<p>It all comes down to effort. “There’s an intensity, duration tradeoff,” says Martin Gibala, Ph.D., chair of the Department of Kinesiology at McMaster University, Ontario.<p>If your primary goal is to be …

Torch some serious calories with this jump rope and pushup ladder<p>When you think of serious fat-burning exercises, jumping rope and pushups probably don’t come to mind.<p>But when you do them back-to-back, as fast as possible, over and over again—like you will in this weekend’s challenge—the two …

This fast routine will leave you with a serious sleeve-busting pump<p>Sometimes you just want to give your guns a little extra love. That’s why Todd Durkin, C.S.C.S., author of <b>The IMPACT! Body Plan</b> created this challenge to put your arm strength and endurance to the test.<p>It’s simple. Pick up some …

These 2 moves back-to-back will chisel your core<p>Certain exercises—like planks and situps—are known for sizzling your six-pack. But the core-carving benefit of other moves isn’t so obvious until you’ve completed a few reps and your muscles are burning.<p>“Pairing two of these unexpected ab-blasters …

How many high-intensity rounds can you push yourself to complete?<p>This fast-paced test doesn’t involve an 800-meter sprint, but it’ll make you feel like it does.<p>"Pairing a stationary kettlebell swing with a fast-feet ladder drill places two different demands on the same set of muscles—your hips, …

How to work out when you travel<p>One of my favorite movies is George Clooney’s <i>Up in the Air</i>. Like many “Road Warriors,” I enjoyed the movie, but I honestly took a few notes, too. I’m typically traveling now every weekend and I have my GoGlobal, TSA precheck, Diamond Status, and mileage perks all …

No weight necessary<p>It's easy to forget or neglect exercises that make you move from side-to-side. For one, you hardly ever see anyone doing them in the gym.<p>But also: The muscles on the sides of your body don't often largely impact how you look in the mirror. "They can, however, change how much you …

This super-hard superset will send your heart rate through the roof<p>Performing two exercises back-to-back without resting—in what's called a superset—is one of the best ways to squeeze a lot of muscle-building work into a short period of time. That's how Sean De Wispelaere, an expert trainer for</b> …

Try this easy exercise to enhance your total-body coordination<p>Coordination isn't always something you think about when heading to the gym. "But without it, your workout would suffer," says David Jack, creator of the <i>Men's Health</i> 60-Day Transformation, and owner of ActivPrayer in Phoenix, Arizona.<p>The …

Make the most of your $10-a-month membership fee<p>When it comes to getting in shape, snagging a membership to a low-price gym—like Planet Fitness—is definitely one of the most cost-effective ways to reach your goals. (Any gym is better than no gym!) "However, since they've replaced traditional …

This 60-second challenge will send your heart rate through the roof<p>Very few moves tax your muscle coordination like a ladder drill and a bear crawl. "Together, they're extra tough," says Sean De Wispelaere, an expert trainer for <b>Men's Health Thrive</b>. And after just one minute, your muscles and your …

Jumpstart your fat burners and build muscle with this quick at-home routine<p>Warm up with the mobility and dynamic flexibility moves. Then perform the 1-minute drill. Rest 15 to 30 seconds, then do the strength circuit. Rest 1 minute. Repeat the drill and strength circuit sequence three to five …

Measure how quickly you can change direction and evade a tackle with this drill featuring Saints running back Darren Sproles<p>Saints running back Darren Sproles stands at 5'6" (well, 5'7" if you ask him) and weighs 190 pounds. He's one of the smallest players in the NFL, but he plays huge. During the …

Saints running back Darren Sproles outlasts his opponents every game. How does your stamina compare to one of the fittest players in the NFL? Find out with this brutal three-move circuit<p>The typical NFL play lasts only about four seconds, so players need to be extremely fast in short bursts. …

Hammer your lower body and blast more fat with this weekend's fitness test<p>Most men's workouts usually target the mirror muscles—biceps, chest, and abs. But when it comes to building your best body, you can't ignore your lower half. Working your glutes, quads, and hamstrings can boost your …

This running challenge will crush calories and test your lung power<p>When's the last time you ran <i>backward</i>? Sure, you might not look cool doing it, but studies have found that motoring in reverse torches more calories, works your lungs more efficiently, and helps your bones to absorb shock more …

Crank up your metabolism and test your willpower with this pushup challenge<p>Most guys abandon the pushup for the bench press sometime in high school. But the old-school move can be a muscle-blasting, calorie-igniting challenge when done using the Tabata Protocol. Here's how the fast-and-furious …